A big shock is an event that is unexpected and causes a strong emotional reaction. It can be described as a MOP, TRAUMA, JOLT, or SURPRISE. A MOP is a tool used to clean floors, but it can also be used to describe a sudden and overwhelming feeling of distress. TRAUMA is an emotional response to a deeply distressing or disturbing experience. A JOLT is a sudden, sharp movement or sensation, and SURPRISE is an unexpected event or experience. All of these words can be used to describe a big shock.